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class="fa-fw iconfont icon-musical-note"></i> <span>音乐解锁</span></a></li></ul></div></div><div id="toggle-menu"><a class="site-page"><i class="fas fa-bars fa-fw"></i></a></div></div></nav><div id="post-info"><h1 class="post-title">HTML基础</h1><div id="post-meta"><div class="meta-firstline"><span class="post-meta-date"><i class="far fa-calendar-alt fa-fw post-meta-icon"></i><span class="post-meta-label">发表于</span><time class="post-meta-date-created" datetime="2021-12-01T08:00:00.000Z" title="发表于 2021-12-01 08:00:00">2021-12-01</time><span class="post-meta-separator">|</span><i class="fas fa-history fa-fw post-meta-icon"></i><span class="post-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2023-08-30T18:00:49.041Z" title="更新于 2023-08-30 18:00:49">2023-08-30</time></span><span class="post-meta-categories"><span class="post-meta-separator">|</span><i class="fas fa-inbox fa-fw post-meta-icon"></i><a class="post-meta-categories" href="/categories/%E5%89%8D%E7%AB%AF%E7%BB%8F%E9%AA%8C/">前端经验</a></span></div><div class="meta-secondline"><span class="post-meta-separator">|</span><span data-flag-title="HTML基础"><i class="far fa-eye fa-fw post-meta-icon"></i><span class="post-meta-label">阅读量:</span><span id="twikoo_visitors"><i class="fa-solid fa-spinner fa-spin"></i></span></span></div></div></div></header><main class="layout" id="content-inner"><div id="post"><article class="post-content" id="article-container"><h3 id="字符集"><a href="#字符集" class="headerlink" title="字符集"></a>字符集</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line">MARKDOWN</span><br><span class="line">utf-8是目前最常用的字符集编码方式，常用的字符集编码方式还有gbk和gb2312；</span><br><span class="line">gb2312简单中文，包括6763个汉字；</span><br><span class="line">BIG5繁体中文，港澳台等用；</span><br><span class="line">GBK包含全部中文字符，是GB2312的扩展，加入对繁体字的支持，兼容GB2312；</span><br><span class="line">UTF-8则包含全世界所有国家需要用到的字符；</span><br><span class="line"></span><br><span class="line">记住一点：以后我们统统使用UTF-8字符集，这样就避免出现字符集不统一而引起乱码的情况了。</span><br></pre></td></tr></table></figure><hr><h3 id="标题标签"><a href="#标题标签" class="headerlink" title="标题标签"></a>标题标签</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line">单词缩写：head 头部、标题</span><br><span class="line">为了使网页更具有语义化，我们经常会在页面中用到标题标签，HTML提供了6个等级的标题，即：</span><br><span class="line">h1 h2 h3 h4 h5 h6</span><br><span class="line">标题标签语义：作为标题使用，并且依据重要性递减!</span><br><span class="line"></span><br><span class="line">---</span><br><span class="line"></span><br><span class="line">### 注意：h1标签因为重要，尽量少用，一般h1都是给logo使用。</span><br></pre></td></tr></table></figure><h3 id="段落标签"><a href="#段落标签" class="headerlink" title="段落标签"></a>段落标签</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">MARKDOWN</span><br><span class="line">单词缩写：paragraph 段落</span><br><span class="line">在网页中要把文字有条理的显示出来，离不来段落标签，就如同写文章需要首行缩进、需要分段一样，整个网页也可以分为若干个段落。</span><br><span class="line">段落标签：</span><br><span class="line">&lt;p&gt;文本内容&lt;/p&gt;</span><br><span class="line">是HTML文档中最常见的标签，默认情况下，文本在一个段落中会根据浏览器窗口的大小自动换行。</span><br></pre></td></tr></table></figure><hr><h3 id="水平线标签"><a href="#水平线标签" class="headerlink" title="水平线标签"></a>水平线标签</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">PLAINTEXT</span><br><span class="line">单词缩写：horizontal横线</span><br><span class="line">在网页中常常看到一些水平线讲段落与段落之间隔开，使得文档结构清晰，层次分明。这些水平线可以通过插入图片实现，也可以简单的通过标记来完成，其基本语法格式如下：</span><br><span class="line">hello!&lt;hr&gt;张三</span><br></pre></td></tr></table></figure><hr><h3 id="换行标签"><a href="#换行标签" class="headerlink" title="换行标签"></a>换行标签</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">PLAINTEXT</span><br><span class="line">在HTML中一个段落的文字会从左到右依次排列，直到浏览器窗口的右端，然后自行换行。如果希望某段文本强制换行显示，就需要使用换行标签。</span><br><span class="line">&lt;br&gt;</span><br><span class="line">这时如果还像在word中直接敲回车键换行就不起作用了。</span><br></pre></td></tr></table></figure><hr><h3 id="div-span标签"><a href="#div-span标签" class="headerlink" title="div span标签"></a>div span标签</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">PLAINTEXT</span><br><span class="line">div span是没有语义的，是我们网页布局主要的两个盒子；</span><br><span class="line">div就是分割、分区的意思，其实有很多div来组合网页；</span><br><span class="line">span跨度、跨距、范围。</span><br></pre></td></tr></table></figure><hr><h3 id="文本格式化标签"><a href="#文本格式化标签" class="headerlink" title="文本格式化标签"></a>文本格式化标签</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">PLAINTEXT</span><br><span class="line">在网页中有时需要为文字设置粗体、斜体或者下划线效果，这时候就需要用到HTML中的文本格式化标记，使文字以特殊的方式显示。</span><br><span class="line">粗体：&lt;strong&gt;、&lt;b&gt;已废弃，不建议使用</span><br><span class="line">斜体：&lt;em&gt;、&lt;i&gt;已废弃，不建议使用</span><br><span class="line">删除线：&lt;del&gt;、&lt;s&gt;已废弃，不建议使用</span><br><span class="line">下划线：&lt;ins&gt;、&lt;u&gt;已废弃，不建议使用</span><br></pre></td></tr></table></figure><hr><h3 id="图像标签"><a href="#图像标签" class="headerlink" title="图像标签"></a>图像标签</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">PLAINTEXT</span><br><span class="line">图像标签：img</span><br><span class="line">该语法中src属性用于指定图像文件的路径和文件名，它是img标签的必要属性。</span><br><span class="line">&lt;img src=&quot;图像URL&quot;&gt;</span><br></pre></td></tr></table></figure><hr><h3 id="手册文档"><a href="#手册文档" class="headerlink" title="手册文档"></a>手册文档</h3><ul><li><a target="_blank" rel="noopener" href="https://www.w3school.com.cn/tags/html_ref_entities.html">字符实体 HTML ISO-8859-1</a></li></ul><hr><h1 id="HTML进阶"><a href="#HTML进阶" class="headerlink" title="HTML进阶"></a>HTML进阶</h1><h3 id="meta"><a href="#meta" class="headerlink" title="meta"></a>meta</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">&lt;meta http-equiv=&quot;Content-Security-Policy&quot; content=&quot;upgrade-insecure-requests&quot;&gt;</span><br></pre></td></tr></table></figure><h3 id="link标签"><a href="#link标签" class="headerlink" title="link标签"></a>link标签</h3><blockquote><p>因为页面切换主题网速慢会出现空白区域影响体验，就了解相关优化方法，下面做个整理</p></blockquote><p><strong>rel</strong></p><ul><li><p><code>preload</code>优先加载（<code>as</code>必填的吧）</p></li><li><p><code>prefetch</code>预加载（空闲时加载）</p></li><li><p><code>dns-prefetch</code>使浏览器主动去执行域名解析的功能。</p></li><li><p><code>preconnect</code>浏览器要建立一个连接，一般需要经过DNS查找，TCP三次握手和TLS协商（如果是https的话），这些过程都是需要相当的耗时的，所以preconnet，就是一项使浏览器能够预先建立一个连接，等真正需要加载资源的时候就能够直接请求了。</p></li><li><p>prerender不仅会加载资源，还会解执行页面，进行预渲染，但是这都是根据浏览器自身进行判断。</p><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">&lt;!-- 浏览器加载资源顺序如下 --&gt;</span><br><span class="line">&lt;link rel=&quot;prefetch&quot; as=&quot;video&quot; href=&quot;4.html&quot;&gt;</span><br><span class="line">&lt;link rel=&quot;stylesheet&quot; href=&quot;2.css&quot;&gt;</span><br><span class="line">&lt;script src=&quot;3.html&quot;&gt;&lt;/script&gt;</span><br><span class="line">&lt;link rel=&quot;prefetch&quot; href=&quot;5.html&quot;&gt;</span><br><span class="line">&lt;link rel=&quot;preload&quot; as=&quot;style&quot; href=&quot;1.css&quot;&gt;</span><br></pre></td></tr></table></figure></li></ul><p><strong>as</strong></p><ul><li><code>audio</code>Audio file.</li><li><code>document</code>An HTML document intended to be embedded inside a <code>&lt;frame&gt;</code> or <code>&lt;iframe&gt;</code>.</li><li><code>embed</code>A resource to be embedded inside an <code>&lt;embed&gt;</code> element.</li><li><code>fetch</code>Resource to be accessed by a fetch or XHR request, such as an ArrayBuffer or JSON file.</li><li><code>font</code>Font file.</li><li><code>image</code>Image file.</li><li><code>object</code>A resource to be embedded inside an <code>&lt;embed&gt;</code> element.</li><li><code>script</code>JavaScript file.</li><li><code>style</code>Stylesheet.</li><li><code>track</code>WebVTT file.</li><li><code>worker</code>A JavaScript web worker or shared worker.</li><li><code>video</code>Video file.</li></ul><h3 id="h5链接唤起App"><a href="#h5链接唤起App" class="headerlink" title="h5链接唤起App"></a>h5链接唤起App</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line">&lt;a href=&quot;mqq://&quot;&gt;qq&lt;/a&gt;</span><br><span class="line">&lt;a href=&quot;mqqapi://forward/url?souce=baidu.com&quot;&gt;qq内置浏览器&lt;/a&gt;</span><br><span class="line">&lt;a href=&quot;weixin://&quot;&gt;微信&lt;/a&gt;</span><br><span class="line">&lt;a href=&quot;TencentWeibo://&quot;&gt;腾讯微博&lt;/a&gt;</span><br><span class="line">&lt;a href=&quot;taobao://&quot;&gt;淘宝&lt;/a&gt;</span><br><span class="line">&lt;a href=&quot;alipay://&quot;&gt;支付宝&lt;/a&gt;</span><br><span class="line">&lt;a href=&quot;sinaweibo://&quot;&gt;新浪微博&lt;/a&gt;</span><br><span class="line">&lt;a href=&quot;snssdk1128://&quot;&gt;抖音&lt;/a&gt;</span><br></pre></td></tr></table></figure><blockquote><p>微信相关</p></blockquote><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br></pre></td><td class="code"><pre><span class="line">微信 weixin://</span><br><span class="line">!发起群聊 weixin://dl/groupchat</span><br><span class="line">通讯录</span><br><span class="line">!添加朋友 weixin://dl/add</span><br><span class="line"></span><br><span class="line">上报日志 weixin://dl/log</span><br><span class="line">故障修复 搜索 :recover</span><br><span class="line">新的朋友 weixin://dl/recommendation</span><br><span class="line"></span><br><span class="line">群聊 weixin://dl/groups</span><br><span class="line">标签 weixin://dl/tags</span><br><span class="line">公众号 weixin://dl/officialaccounts</span><br><span class="line">发现</span><br><span class="line">朋友圈 weixin://dl/moments</span><br><span class="line">扫一扫 weixin://dl/scan</span><br><span class="line">购物（京东） weixin://dl/shopping</span><br><span class="line">游戏 weixin://dl/games</span><br><span class="line">我</span><br><span class="line">个人信息 weixin://dl/profile</span><br><span class="line">名字 weixin://dl/setname</span><br><span class="line">我的二维码 weixin://dl/myQRcode</span><br><span class="line">我的地址 weixin://dl/myaddress</span><br><span class="line">相册 weixin://dl/posts</span><br><span class="line">收藏 weixin://dl/favorites</span><br><span class="line">优惠券 weixin://dl/card</span><br><span class="line">表情 weixin://dl/stickers</span><br><span class="line">设置 weixin://dl/settings</span><br><span class="line"></span><br><span class="line">QQ 号 weixin://dl/bindqq</span><br><span class="line">手机号 weixin://dl/bindmobile</span><br><span class="line">邮箱地址 weixin://dl/bindemail</span><br><span class="line">帐号保护 weixin://dl/protection</span><br><span class="line">新消息通知 weixin://dl/notifications</span><br><span class="line"></span><br><span class="line">通讯录黑名单 weixin://dl/blacklist</span><br><span class="line"></span><br><span class="line">不让他（她）看我的朋友圈 weixin://dl/hidemoments</span><br><span class="line">不看他（她）的朋友圈 weixin://dl/blockmoments</span><br><span class="line">通用 weixin://dl/general</span><br><span class="line"></span><br><span class="line">多语言 weixin://dl/languages</span><br><span class="line">字体大小 weixin://dl/textsize</span><br><span class="line">我的表情 weixin://dl/stickersetting</span><br><span class="line">朋友圈小视频 weixin://dl/sight</span><br><span class="line">功能 weixin://dl/features</span><br><span class="line"></span><br><span class="line">通讯录同步助手 weixin://dl/securityassistant</span><br><span class="line">群发助手 weixin://dl/broadcastmessage</span><br><span class="line">聊天记录迁移 weixin://dl/chathistory</span><br><span class="line">清理微信存储空间 weixin://dl/clear</span><br><span class="line">帮助与反馈</span><br><span class="line">意见反馈 weixin://dl/help 或 weixin://dl/feedback</span><br><span class="line">关于微信 weixin://dl/about</span><br><span class="line">其他</span><br><span class="line">隐藏入口 参数不明 第三方 Webview 接口 weixin://dl/businessWebview/link/</span><br><span class="line">隐藏入口 参数不明 第三方游戏库接口 weixin://dl/businessGame/library/</span><br><span class="line">隐藏入口 参数不明 第三方游戏详情接口 weixin://dl/businessGame/detail/</span><br><span class="line">隐藏入口 参数不明 第三方支付接口 weixin://dl/businessPay/</span><br><span class="line">隐藏入口 参数不明 第三方临时会话接口 weixin://dl/business/tempsession/ 或 weixin://dl/businessTempSession/</span><br><span class="line">未知</span><br><span class="line">weixin://dl/chat</span><br><span class="line">weixin://dl/designeremoji</span><br><span class="line">weixin://dl/login/common_view</span><br><span class="line">weixin://dl/login/phone_view</span><br><span class="line">weixin://dl/personalemoticon</span><br><span class="line">weixin://private/</span><br><span class="line">weixin://private/setresult/</span><br><span class="line">weixin://dl/updatenewestversion</span><br><span class="line">weixin://dl/wechatout</span><br><span class="line">weixin://dl/wechatoutcoupon</span><br><span class="line">隐藏入口</span><br><span class="line"></span><br><span class="line">第三方公众号临时会话接口</span><br><span class="line">weixin://dl/business参数 ticket</span><br><span class="line">weixin://dl/business/?ticket=</span><br></pre></td></tr></table></figure><h3 id="缓存功能"><a href="#缓存功能" class="headerlink" title="缓存功能"></a>缓存功能</h3><p>好像被废弃掉了，慎用！</p><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">&lt;html lang=&quot;zh-CN&quot; manifest=&quot;/manifest/main.appcache&quot;&gt;</span><br></pre></td></tr></table></figure><h3 id="HTML5中audio与video："><a href="#HTML5中audio与video：" class="headerlink" title="HTML5中audio与video："></a>HTML5中audio与video：</h3><h4 id="音频"><a href="#音频" class="headerlink" title="音频"></a>音频</h4><p>HTML5 中提供的音频 API 标签为 <code>&lt;audio&gt;&lt;/audio&gt;</code>，使用示例如：</p><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">&lt;audio src=&quot;野狼disco.m4a&quot; controls&gt;&lt;/audio&gt;</span><br></pre></td></tr></table></figure><p>兼容写法</p><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line">&lt;audio controls&gt;</span><br><span class="line">    &lt;source src=&quot;resource/audio/OUTPUT.mp3&quot; type=&#x27;audio/mpeg&#x27;&gt;</span><br><span class="line">    &lt;source src=&quot;resource/audio/OUTPUT.aac&quot; type=&#x27;audio/aac; codecs=&quot;aac&quot;&#x27;&gt;</span><br><span class="line">    &lt;source src=&quot;resource/audio/OUTPUT.ogg&quot; type=&#x27;audio/ogg; codecs=&quot;vorbis&quot;&#x27;&gt;</span><br><span class="line"></span><br><span class="line">    您的浏览器不支持，&lt;a href=&quot;resource/audio/OUTPUT.mp3&quot;&gt;请下载&lt;/a&gt;</span><br><span class="line">&lt;/audio&gt;</span><br></pre></td></tr></table></figure><p>当浏览器不支持或者当前音乐地址失效时会分别访问 <code>source</code> 提供的路径，如果全部失效则提示最下边的文本。</p><h4 id="音乐属性"><a href="#音乐属性" class="headerlink" title="音乐属性"></a>音乐属性</h4><table><thead><tr><th>属性名</th><th>说明</th></tr></thead><tbody><tr><td><code>controls</code></td><td>显示控件</td></tr><tr><td><code>autoplay</code></td><td>自动播放</td></tr><tr><td><code>loop</code></td><td>循环播放</td></tr><tr><td><code>preload</code></td><td>预加载</td></tr><tr><td><code>muted</code></td><td>静音</td></tr></tbody></table><h4 id="视频"><a href="#视频" class="headerlink" title="视频"></a>视频</h4><p>HTML5 中提供的音频 API 标签为 <code>&lt;video&gt;&lt;/video&gt;</code>，使用示例如：</p><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">&lt;video src=&quot;不能说的秘密.mp4&quot; controls&gt;&lt;/video&gt;</span><br></pre></td></tr></table></figure><p>兼容写法与音乐相同</p><h4 id="视频属性"><a href="#视频属性" class="headerlink" title="视频属性"></a>视频属性</h4><table><thead><tr><th>属性名</th><th>说明</th></tr></thead><tbody><tr><td><code>controls</code></td><td>显示控件</td></tr><tr><td><code>autoplay</code></td><td>自动播放</td></tr><tr><td><code>loop</code></td><td>循环播放</td></tr><tr><td><code>muted</code></td><td>静音</td></tr><tr><td><code>poster</code></td><td>预览图片设置</td></tr><tr><td><code>preload</code></td><td>预加载 <code>none</code>: 不预先加载任何数据 <code>metadata</code>: 只预先加载元数据 （视频总时长，第一帧画面图形等） <code>auto</code>: 预先加载视频</td></tr></tbody></table><h4 id="音视频事件"><a href="#音视频事件" class="headerlink" title="音视频事件"></a>音视频事件</h4><table><thead><tr><th>事件名</th><th>说明</th></tr></thead><tbody><tr><td><code>onloadedmetadata</code></td><td>当音频元数据加载完毕时触发，作用<strong>在于获取音视频文件的总时长</strong></td></tr><tr><td><code>ontimeupdate</code></td><td>当音频播放时间变化时触发</td></tr><tr><td><code>onvolumechange</code></td><td>当声音改变时触发</td></tr></tbody></table><h4 id="音视频对象属性"><a href="#音视频对象属性" class="headerlink" title="音视频对象属性"></a>音视频对象属性</h4><p>可读可写属性</p><table><thead><tr><th>属性名</th><th>说明</th></tr></thead><tbody><tr><td><code>currentTime</code></td><td>音频已经播放时长（返回未格式化的秒）</td></tr><tr><td><code>volume</code></td><td>控制音量。值为 0 ~ 1 的任意值。</td></tr><tr><td><code>muted</code></td><td>布尔值。静音。（ture 表示静音，false 表示非静音）</td></tr><tr><td><code>playbackRate</code></td><td>播放速率</td></tr></tbody></table><p>只读属性</p><table><thead><tr><th>属性名</th><th>说明</th></tr></thead><tbody><tr><td><code>duration</code></td><td>音频总时长（返回未格式化的秒）</td></tr><tr><td><code>paused</code></td><td>布尔值。音频文件是否暂停。（ture 表示暂停，false 表示播放）</td></tr><tr><td><code>ended</code></td><td>布尔值。音频文件播放结束（ture 表示播放结束，false 表示播放中或者暂停）</td></tr></tbody></table><h4 id="音视频对象方法"><a href="#音视频对象方法" class="headerlink" title="音视频对象方法"></a>音视频对象方法</h4><table><thead><tr><th>方法名</th><th>说明</th></tr></thead><tbody><tr><td><code>pause</code></td><td>暂停</td></tr><tr><td><code>play</code></td><td>播放</td></tr></tbody></table></article><div 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id="card-toc"><div class="item-headline"><i class="fas fa-stream"></i><span>目录</span><span class="toc-percentage"></span></div><div class="toc-content"><ol class="toc"><li class="toc-item toc-level-3"><a class="toc-link" href="#%E5%AD%97%E7%AC%A6%E9%9B%86"><span class="toc-number">1.</span> <span class="toc-text">字符集</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E6%A0%87%E9%A2%98%E6%A0%87%E7%AD%BE"><span class="toc-number">2.</span> <span class="toc-text">标题标签</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E6%AE%B5%E8%90%BD%E6%A0%87%E7%AD%BE"><span class="toc-number">3.</span> <span class="toc-text">段落标签</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E6%B0%B4%E5%B9%B3%E7%BA%BF%E6%A0%87%E7%AD%BE"><span class="toc-number">4.</span> <span class="toc-text">水平线标签</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E6%8D%A2%E8%A1%8C%E6%A0%87%E7%AD%BE"><span class="toc-number">5.</span> <span class="toc-text">换行标签</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#div-span%E6%A0%87%E7%AD%BE"><span class="toc-number">6.</span> <span class="toc-text">div span标签</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E6%96%87%E6%9C%AC%E6%A0%BC%E5%BC%8F%E5%8C%96%E6%A0%87%E7%AD%BE"><span class="toc-number">7.</span> <span class="toc-text">文本格式化标签</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E5%9B%BE%E5%83%8F%E6%A0%87%E7%AD%BE"><span class="toc-number">8.</span> <span class="toc-text">图像标签</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E6%89%8B%E5%86%8C%E6%96%87%E6%A1%A3"><span class="toc-number">9.</span> <span class="toc-text">手册文档</span></a></li></ol><li class="toc-item toc-level-1"><a class="toc-link" href="#HTML%E8%BF%9B%E9%98%B6"><span class="toc-number"></span> <span class="toc-text">HTML进阶</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#meta"><span class="toc-number">1.</span> <span class="toc-text">meta</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#link%E6%A0%87%E7%AD%BE"><span class="toc-number">2.</span> <span class="toc-text">link标签</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#h5%E9%93%BE%E6%8E%A5%E5%94%A4%E8%B5%B7App"><span class="toc-number">3.</span> <span class="toc-text">h5链接唤起App</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E7%BC%93%E5%AD%98%E5%8A%9F%E8%83%BD"><span class="toc-number">4.</span> <span class="toc-text">缓存功能</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#HTML5%E4%B8%ADaudio%E4%B8%8Evideo%EF%BC%9A"><span class="toc-number">5.</span> <span class="toc-text">HTML5中audio与video：</span></a><ol class="toc-child"><li class="toc-item toc-level-4"><a class="toc-link" href="#%E9%9F%B3%E9%A2%91"><span class="toc-number">5.1.</span> <span class="toc-text">音频</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E9%9F%B3%E4%B9%90%E5%B1%9E%E6%80%A7"><span class="toc-number">5.2.</span> <span class="toc-text">音乐属性</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E8%A7%86%E9%A2%91"><span class="toc-number">5.3.</span> <span class="toc-text">视频</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E8%A7%86%E9%A2%91%E5%B1%9E%E6%80%A7"><span class="toc-number">5.4.</span> <span class="toc-text">视频属性</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E9%9F%B3%E8%A7%86%E9%A2%91%E4%BA%8B%E4%BB%B6"><span class="toc-number">5.5.</span> <span class="toc-text">音视频事件</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E9%9F%B3%E8%A7%86%E9%A2%91%E5%AF%B9%E8%B1%A1%E5%B1%9E%E6%80%A7"><span class="toc-number">5.6.</span> <span class="toc-text">音视频对象属性</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E9%9F%B3%E8%A7%86%E9%A2%91%E5%AF%B9%E8%B1%A1%E6%96%B9%E6%B3%95"><span class="toc-number">5.7.</span> <span class="toc-text">音视频对象方法</span></a></li></ol></li></ol></li></div></div><div class="card-widget card-recent-post"><div class="item-headline"><i class="fas fa-history"></i><span>最新文章</span></div><div class="aside-list"><div class="aside-list-item"><a class="thumbnail" href="/post/ds2s/" title="整个前端面试题"><img src="https://cdn1.tianli0.top/gh/web-xc/iMG/postss/vue.png" onerror='this.onerror=null,this.src="https://npm.elemecdn.com/webxc@1.0.2/banner/404.gif"' alt="整个前端面试题"></a><div class="content"><a class="title" href="/post/ds2s/" title="整个前端面试题">整个前端面试题</a><time datetime="2023-08-31T02:00:00.000Z" title="发表于 2023-08-31 02:00:00">2023-08-31</time></div></div><div class="aside-list-item"><a class="thumbnail" href="/post/ds23/" title="常见前端面试题"><img src="https://cdn1.tianli0.top/gh/web-xc/iMG/postss/vue.png" 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